Login credentials for a business are not being delivered.

Verify the “FROM” email from your account. The issue is likely with the email being used as the From email for the Agency.

Emails sent by a 3rd party software using an alias from a Yahoo, Gmail, Hotmail account are flagged by most ISPs so you will need to have the email sent from a business email address to avoid any issue.

Try using a URL vs an email provider ( Support@MySite.com ) you're likely being flagged as spam since you are using a 3rd party email service as the FROM URL.